Heath Bar Cupcakes

Ingredients

• 1 (18.25 ounce) package devil’s food cake mix
• 1 (5.9 ounce) package instant chocolate pudding mix
• 1 cup sour cream
• 1 cup vegetable oil
• 4 eggs, lightly beaten
• 2 teaspoons pure vanilla extract
• 1 tablespoon instant espresso granules dissolved in 1/2 cup warm water
• 1 cup heath english toffee bits
• 4 sticks unsalted butter, softened
• pinch of fine grain sea salt
• 1 tablespoon clear vanilla extract
• 2 pounds confectioners’ sugar, sifted
• 4-6 tablespoons heavy cream or milk
• 4 oz bittersweet chocolate, chopped into very small pieces
• 1/2 cup heavy whipping cream
• 2 tablespoons honey
• 2 tablespoons light corn syrup
• 2 teaspoons vanilla
• 5 1.4-ounce heath bars, chopped into large pieces